A microwave power supply device for a cigarette rolling machine

Abstract

This application provides a microwave power supply device for cigarette making machines, relating to the field of power supply device technology. The microwave power supply device for cigarette making machines includes: a time-controlled circuit breaker, an AC-DC power supply, an energy storage module, a microwave power supply load, and a control module. The input terminal of the time-controlled circuit breaker is connected to a 220V front-end power supply; the output terminal of the time-controlled circuit breaker is connected to the input terminal of the AC-DC power supply; the output terminal of the AC-DC power supply is connected to the input terminal of the energy storage module; the output terminal of the energy storage module is connected to the microwave power supply load; and the control module is connected to the time-controlled circuit breaker, the AC-DC power supply, and the energy storage module. Thus, through a chain-like power supply structure, efficient energy conversion and multi-level buffering are achieved, solving the problem of microwave detection signal distortion caused by voltage fluctuations in traditional microwave power supply devices and improving power supply continuity. Furthermore, the control module can control the time-controlled circuit breaker to disconnect the power supply during a preset time period (e.g., nighttime, weekends, or other non-operating periods) based on the time signal fed back by the time-controlled circuit breaker, saving energy.

Description

Technical Field

[0001] This utility model relates to the field of power supply device technology, and more specifically, to a microwave power supply device for a cigarette rolling machine. Background Technology

[0002] In the field of cigarette manufacturing equipment, microwave power supply devices are the core system for ensuring cigarette drying and process quality inspection, and are commonly used for cigarette weight detection. In mainstream cigarette manufacturing equipment such as the ZJ118, a 110V front-end power supply is primarily used as the input power for the cigarette weight microwave detector.

[0003] However, in practical applications, voltage fluctuations in the 110V front-end power supply during operation (such as unstable power grid or excessive line impedance) can cause abnormal microwave signal operation, leading to problems such as drift in cigarette weight detection data. Furthermore, traditional microwave power supply devices mainly rely on manual power-off, which can easily result in energy waste during periods when the cigarette rolling machine is not in operation. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a microwave power supply device for cigarette making machines, which can improve the problems of unstable voltage and inflexible control of the power supply circuit leading to energy waste in traditional microwave power supply devices.

[0005] To achieve the above technical objectives, the technical solution adopted in this application is as follows:

[0006] This application provides a microwave power supply device for a cigarette rolling machine, including:

[0007] Time-controlled circuit breakers, AC-DC power supplies, energy storage modules, microwave power loads and control modules;

[0008] The input terminal of the time-controlled circuit breaker is used to connect to the 220V front-end power supply. The output terminal of the time-controlled circuit breaker is connected to the input terminal of the AC-DC power supply. The output terminal of the AC-DC power supply is connected to the input terminal of the energy storage module. The output terminal of the energy storage module is connected to the microwave power supply load. The control module is connected to the time-controlled circuit breaker, the AC-DC power supply, and the energy storage module respectively.

[0009] In this technical solution, the time-controlled circuit breaker is connected to 220V AC power and outputs to an AC-DC power supply. The AC-DC power module outputs to an energy storage module (supercapacitor and lithium battery pack), which supplies power to the microwave load. The control module monitors the status of each node in real time. Thus, through a chain-like power supply structure, efficient energy conversion and multi-level buffering are achieved, solving the problem of microwave detection signal distortion caused by voltage fluctuations in traditional microwave power supply devices and improving power supply continuity. Furthermore, the control module can control the time-controlled circuit breaker to disconnect the power supply during preset time periods (e.g., nighttime, weekends, and other non-working periods) based on the time signal feedback from the circuit breaker, saving energy. The structure is simple and highly practical.

[0010] As an optional implementation, the opening handle of the time-controlled circuit breaker is connected to the emergency stop circuit in the microwave power supply load via a linkage rod. When the time-controlled circuit breaker opens, it is used to cut off the microwave drive signal of the microwave power supply load.

[0011] The AC-DC power supply includes a first power supply unit and a second power supply unit connected in parallel, and the output terminals of the first power supply unit and the second power supply unit are connected through a current sharing resistor.

[0012] The energy storage module includes a supercapacitor bank and a lithium battery bank, which are connected in parallel via a bidirectional DC-DC converter.

[0013] In this technical solution, when the time-controlled circuit breaker trips, it synchronously triggers the emergency stop circuit of the microwave load via a linkage rod, forcibly cutting off the microwave drive signal to achieve emergency protection. The AC-DC power supply uses dual parallel power supply units with current-sharing resistors to ensure balanced output current even in the event of a single unit failure. In the energy storage module, the supercapacitor bank (high power characteristics) and the lithium battery bank (high capacity characteristics) are connected in parallel through a bidirectional DC-DC converter to achieve dynamic energy allocation during charging and discharging. This design provides millisecond-level safety response during sudden power outages, improves power supply redundancy reliability, and optimizes pulse load adaptability and cycle life through a composite energy storage design. The structure is simple and highly practical.

[0014] As an optional implementation, the control module includes a voltage sensor, a temperature sensor, and a circuit breaker status detection switch;

[0015] The voltage sensor is connected to the output terminal of the AC-DC power supply, the temperature sensor is installed on the surface of the energy storage module's housing, and the circuit breaker status detection switch is installed on the opening handle of the time-controlled circuit breaker.

[0016] In this technical solution, the control module collects real-time voltage fluctuation data at the AC-DC power output terminal through a voltage sensor, monitors the surface temperature rise of the energy storage module enclosure through a temperature sensor, and tracks the position change of the circuit breaker status detection switch. Thus, through the fusion of multi-dimensional sensor data, the system can instantly identify overvoltage, overheating, or abnormal tripping states. This logic achieves full-time fault early warning for the power supply link, effectively preventing equipment damage caused by voltage surges, temperature runaway, or misoperation, ensuring continuous and safe system operation. It has a simple structure and strong practicality.

[0017] As an optional implementation, the supercapacitor group includes multiple individual capacitors connected in series, with each pair of individual capacitors fixed together by a conductive connecting piece, and an insulating layer is provided between the conductive connecting piece and the capacitor electrode.

[0018] In this technical solution, the supercapacitor bank consists of multiple series-connected individual capacitors, which are mechanically fixed and conduct current through conductive connecting pieces. An insulating layer is embedded between the connecting pieces and the electrodes to form physical isolation. This maintains efficient current transmission while eliminating the risk of short circuits between electrodes caused by metal-to-metal contact. It improves the structural stability and electrical safety of the capacitor bank under the high-frequency vibration environment of cigarette machines, avoiding system failures caused by vibration-induced loosening. The structure is simple and highly practical.

[0019] As an optional implementation, the control module is connected to the AC-DC power supply and energy storage module via a shielded cable, the shielded cable including an inner shielding layer and an outer shielding layer.

[0020] In this technical solution, the control module is connected to the AC-DC power supply and energy storage module using a double-shielded cable. The inner shielding layer suppresses low-frequency magnetic field interference, while the outer shielding layer blocks high-frequency electromagnetic radiation. This dual shielding mechanism blocks the transmission of noise generated by the frequency converter, motor, and other equipment in the strong electromagnetic environment of the cigarette machine. It ensures the integrity of the transmission of control commands and sensor data, especially guaranteeing the monitoring accuracy of key parameters such as voltage and temperature. The structure is simple and highly practical.

[0021] As an optional implementation, the bottom of the energy storage module housing is provided with a flow guide groove, which corresponds to the air outlet of the cigarette machine's air-cooling system.

[0022] In this technical solution, a guide channel is opened at the bottom of the energy storage module housing, precisely aligned with the air outlet of the cigarette machine's built-in air-cooling system. The forced airflow generated during equipment operation passes through the guide channel to form a directional airflow duct. In this way, without the need for an external cooling device, the airflow can be concentrated and guided to the heat-concentrated areas of the supercapacitor and lithium battery packs. This reduces the operating temperature of the energy storage module, slows down battery aging, and prevents high-temperature capacity decay of the supercapacitor, while also reducing additional heat dissipation energy consumption. The structure is simple and highly practical.

[0023] The utility model adopting the above technical solution has the following advantages:

[0024] The technical solution provided in this application achieves efficient power conversion and multi-level buffering through a chain-type power supply structure, solving the problem of microwave detection signal distortion caused by voltage fluctuations in traditional microwave power supply devices and improving power supply continuity. Furthermore, the control module can control the time-controlled circuit breaker to disconnect the power supply within a preset time period (e.g., nighttime, weekends, or other non-working periods) based on the time signal fed back by the time-controlled circuit breaker, thereby achieving energy savings. Attached Figure Description

[0025] This application can be further illustrated by the non-limiting embodiments given in the accompanying drawings. It should be understood that the following drawings only illustrate some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without any inventive effort.

[0026] Figure 1 This is a schematic diagram of the structure of the microwave power supply device for cigarette making machine provided in the embodiments of this application.

[0027] Figure 2 This is a wiring diagram of a microwave power supply device for a cigarette machine provided in an embodiment of this application.

[0028] Icons: 110 - Front-end power supply; 120 - Time-controlled circuit breaker; 130 - AC-DC power supply; 140 - Energy storage module; 150 - Microwave power load; 160 - Control module. Detailed Implementation

[0029] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In the description of this application, terms such as "first" and "second" are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Please refer to Figure 1This application provides a microwave power supply device for a cigarette machine, including: a time-controlled circuit breaker 120, an AC-DC power supply 130, an energy storage module 140, a microwave power load 150, and a control module 160. The input terminal of the time-controlled circuit breaker 120 is connected to a 220V front-end power supply 110. The output terminal of the time-controlled circuit breaker 120 is connected to the input terminal of the AC-DC power supply 130. The output terminal of the AC-DC power supply 130 is connected to the input terminal of the energy storage module 140. The output terminal of the energy storage module 140 is connected to the microwave power load 150. The control module 160 is connected to the time-controlled circuit breaker 120, the AC-DC power supply 130, and the energy storage module 140. A guide channel is provided at the bottom of the housing of the energy storage module 140, corresponding to the air outlet of the cigarette machine's air-cooling system, to reduce the operating temperature of the energy storage module 140, delay battery aging, and reduce heat dissipation energy consumption. Furthermore, the "connection" mentioned in this application refers to the electrical connection between various electrical structures.

[0031] The time-controlled circuit breaker 120's trip handle is connected to the emergency stop circuit in the microwave power supply load 150 via a linkage rod. When the time-controlled circuit breaker 120 trips, it cuts off the microwave drive signal of the microwave power supply load 150. The AC-DC power supply 130 includes a first power supply unit and a second power supply unit connected in parallel, with their output terminals connected via a current-sharing resistor. The energy storage module 140 includes a supercapacitor bank and a lithium battery bank, which are connected in parallel via a bidirectional DC-DC converter. The supercapacitor bank includes multiple individual capacitors connected in series, with each pair of individual capacitors fixed by a conductive connecting piece, and an insulating layer between the conductive connecting piece and the capacitor electrodes. This design provides a millisecond-level safety response during sudden power outages, improves power supply redundancy reliability, and optimizes pulse load adaptability and cycle life through a composite energy storage design. The structure is simple and highly practical.

[0032] In this embodiment, the control module 160 includes a voltage sensor, a temperature sensor, and a circuit breaker status detection switch. The voltage sensor is connected to the output terminal of the AC-DC power supply 130, the temperature sensor is mounted on the surface of the energy storage module 140's enclosure, and the circuit breaker status detection switch is mounted on the opening handle of the time-controlled circuit breaker 120. Thus, through multi-dimensional sensor data fusion, the system can instantly identify overvoltage, overheating, or abnormal opening states. This logic achieves full-time fault early warning for the power supply link, effectively preventing equipment damage caused by voltage surges, temperature runaway, or misoperation, ensuring continuous and safe system operation. It has a simple structure and strong practicality.

[0033] In this embodiment, the control module 160 is connected to the AC-DC power supply 130 and the energy storage module 140 via a shielded cable. The shielded cable includes an inner shielding layer and an outer shielding layer. The inner shielding layer can be a tin-plated copper braided mesh, and the outer shielding layer can be an aluminum foil composite layer.

[0034] Please refer to Figure 2 In this embodiment, the control module 160 is connected via shielded cables to the voltage detection point (i.e., output terminal) of the AC-DC power supply 130 and the temperature detection point (mounted on the surface of the energy storage module 140's housing). Specifically, in practical applications, the multi-core output signal line of the control module 160 enters the shielded cable. The ends of the inner and outer shielding layers of the shielded cable are connected to the outer shell of a metal EMI (Electro Magnetic Interference) filter. After the output signal of the control module 160 is filtered by the EMI filter, the output terminal of the EMI filter is connected to the voltage detection point of the AC-DC power supply 130 and the temperature detection point of the energy storage module 140, respectively. The outer shell of the EMI filter is connected to the equipment grounding copper busbar (grounding post of the energy storage module 140).

[0035] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A microwave power supply device for a cigarette rolling machine, characterized in that, include: Time-controlled circuit breakers, AC-DC power supplies, energy storage modules, microwave power loads and control modules; The input terminal of the time-controlled circuit breaker is used to connect to the 220V front-end power supply. The output terminal of the time-controlled circuit breaker is connected to the input terminal of the AC-DC power supply. The output terminal of the AC-DC power supply is connected to the input terminal of the energy storage module. The output terminal of the energy storage module is connected to the microwave power supply load. The control module is connected to the time-controlled circuit breaker, the AC-DC power supply, and the energy storage module respectively.

2. The microwave power supply device for a cigarette rolling machine according to claim 1, characterized in that, The opening handle of the time-controlled circuit breaker is connected to the emergency stop circuit in the microwave power supply load via a linkage rod. When the time-controlled circuit breaker opens, it is used to cut off the microwave drive signal of the microwave power supply load. The AC-DC power supply includes a first power supply unit and a second power supply unit connected in parallel, and the output terminals of the first power supply unit and the second power supply unit are connected through a current sharing resistor. The energy storage module includes a supercapacitor bank and a lithium battery bank, which are connected in parallel via a bidirectional DC-DC converter.

3. The microwave power supply device for a cigarette rolling machine according to claim 1, characterized in that, The control module includes a voltage sensor, a temperature sensor, and a circuit breaker status detection switch; The voltage sensor is connected to the output terminal of the AC-DC power supply, the temperature sensor is installed on the surface of the energy storage module's housing, and the circuit breaker status detection switch is installed on the opening handle of the time-controlled circuit breaker.

4. The microwave power supply device for a cigarette rolling machine according to claim 2, characterized in that, The supercapacitor group includes multiple individual capacitors connected in series. Each pair of individual capacitors is fixed together by a conductive connecting piece, and an insulating layer is provided between the conductive connecting piece and the capacitor electrode.

5. The microwave power supply device for a cigarette rolling machine according to claim 1, characterized in that, The control module is connected to the AC-DC power supply and energy storage module via a shielded cable, which includes an inner shielding layer and an outer shielding layer.

6. The microwave power supply device for a cigarette rolling machine according to claim 1, characterized in that, The bottom of the energy storage module housing is provided with a flow guide groove, which corresponds to the air outlet of the cigarette machine's air-cooling system.

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